These magnitude comparators perform comparisons of two eight-bit binary or BCD words. All types provide P = Q\ outputs and all except 'LS688 provide P > Q\ outputs as well. The 'LS682, 'LS684, 'LS686, and 'LS688 have totem-pole outputs, while the 'LS685 and 'LS687 have open-collector outputs. The 'LS682 features 20-kΩ pullup termination resistors on the Q inputs for analog or switch data.
Compares Two-8-Bit Words
Choice of Totem-Pole or Open-Collector Outputs
Hysteresis at P and Q Inputs
'LS682 has 20-kΩ Pullup Resistors on the Q Inputs
SN74LS686 and 'LS687 … JT and NT 24-Pin, 300-Mil Packages